Volvo Penta V8-350-C Aquamatic DP-S Sterndrive Engine Package

Description

Pumping 350BHP at 5,800 RPM from a 5.3L displacement block, the Volvo Penta V8-350-C DP-S Package produces high-performance propulsion for large dayboats. This 16-Valve OHV engine yields 270BHP continuous output at 5,000 RPM. Spark-ignited direct injection requires 10-micron fuel water separation, and high-flow aluminum cylinder heads demand closed-cooling anti-freeze protection. Clean fuel extends injector tip life.

A die-cast all-aluminum block integrates cast-in iron liners to support continuous V8 combustion firing loads. The all-aluminum 16-Valve cylinder heads feature high-flow intake ports and variable valve timing. Electrical systems operate on a 12V marine ground with a 1.4 kW starter and a 12V 75A alternator. Package envelope dimensions measure 36.8in long, 30.6in wide, and 32.3in high. Complete package dry weight equals 1,065 lbs with the DP-S sterndrive. Oil pan capacity holds 1.45 US gal.

Key Features of Volvo Penta V8-350-C

Large deck boat owners buy Volvo Penta V8-350-C DP-S sterndrive packages to equip 23ft to 30ft sport cruisers with high-output V8 power. Marine yards choose this package for commercial workboat diesel engine repower hulls converting to lightweight gasoline sterndrives.

• Spark-ignited direct injection sprays atomized fuel straight into combustion chambers for maximum efficiency
• Variable valve timing adjusts camshaft timing across the RPM range to optimize hole-shot acceleration
• Aquamatic DP-S sterndrives use dual counter-rotating propellers to eliminate steering pull and cavitation
• Closed freshwater cooling loops protect internal aluminum water jackets from corrosive raw seawater
• High-pressure common fuel rails feed direct injectors to optimize economy and lower emissions
• Die-cast aluminum engine castings reduce transom weight to improve planing hull trim
• Serpentine belt systems maintain positive drive grip on the 12V 75A alternator

Bench Dynamometer Load Test Output

Dynamometer test runs prove 350BHP peak output at 5,800 RPM and 270BHP continuous output at 5,000 RPM. Naturally aspirated intake manifold pressures hold at 1.00 bar barometric reference. Closed freshwater cooling circuits stabilize block temperatures at 160°F under continuous dyno loading. Engine oil pressure maintains 48 PSI across operational engine speeds. Sterndrive trim permits up to 30° static trailering angles. Crankshaft journal runout remains below 0.0005in TIR to protect bearings against deflection fatigue. Exhaust manifold temperatures stay below 1,180°F during full power runs.

Field Operation Maintenance Service Rules

Mechanical throttle and shift controls provide positive detent action with under 2 lbs of lever resistance. Do not install this V8 gasoline sterndrive package in commercial displacement push-boats or vessels operating in shallow mud flats without raw-water strainers. Operators must run clean unleaded gasoline with minimum 87 AKI octane ratings and inspect outdrive drive bellows regularly to prevent water intrusion.

• Drain engine oil and change spin-on oil filter cartridges every 100 operating hours
• Inspect DP-S sterndrive gear oil, drive bellows, and sacrificial zinc anodes every 100 hours
• Replace the primary 10-micron fuel water separator filter cartridge every 100 engine hours

Factory Warranty Shipment Parts Manifest

Volvo Penta provides a 2-Year limited warranty backed by 3-Year major component structural coverage. The shipment crate contains the V8 marine gasoline engine core, Aquamatic DP-S sterndrive outdrive unit, transom shield kit, 12V 75A alternator, 1.4 kW starter, power trim pump, and factory technical manuals.